A 67 years old patient has consulted for hypogastric pain, associated with a pollakiuria running for more than 12 months. The medical story reported genital prolapse, some episodes of haematuria and dysuria. Pelvic ultrasound showed a voluminous image of lithiasic appearance with irregular borders. A cystotomy was performed under perimedullary anesthesia allowing the extraction of a giant bladder stone measuring 7.2 cm as major axis and 5.5 cm for small axis.